What are the measurement principles of MS?
1. BASIC MASS SPECTROMETRY
Magnetic field Sector type
Ions travel in a circular orbit within a magnet but the radius of the orbit is different depending on the ion mass. This difference is utilized to separate various masses.
![Magnetic Sector Mass Spectrometer](/sites/shimadzu.com.au/files/d7/ckeditor/an/support/gcms/38_1.gif)
Quadrupole type
RF and DC voltages are overlapped and applied to 4 rods. While ions traveling between the rods oscillate, the oscillating orbit is different depending on the mass. This difference is utilized to separate various masses.
RF and DC voltages are overlapped and applied to 4 rods. While ions traveling between the rods oscillate, the oscillating orbit is different depending on the mass. This difference is utilized to separate various masses.
![Overview of Quadrupole Mass Analyzer](/sites/shimadzu.com.au/files/d7/ckeditor/an/support/gcms/38_2_1.gif)
![Structure of Quadrupole Mass Analyzer](/sites/shimadzu.com.au/files/d7/ckeditor/an/support/gcms/38_2_2.gif)
![Voltages Applied to QP Rods](/sites/shimadzu.com.au/files/d7/ckeditor/an/support/gcms/38_2_3.gif)
![Mass Selection with QP Mass Analyzer](/sites/shimadzu.com.au/files/d7/ckeditor/an/support/gcms/38_2_4.gif)
Time-of-Flight type
The time required to fly a fixed distance depends on the mass and is utilized to separate various masses.
The time required to fly a fixed distance depends on the mass and is utilized to separate various masses.
![Time-of-Flight Mass Analyzer](/sites/shimadzu.com.au/files/d7/ckeditor/an/support/gcms/38_3.gif)
The time required to fly a fixed distance depends on the mass and is utilized to separate various masses.